Pressure-regulator.



W. F. KRIGHBAUM.

' PRESSURE REGULATOR.

AAAAAAAAAAA PI 11111111111 9. Q 941, 1 53. Patented :Nov. 23, 1909. m 2 SH ssss ss BET 2. an mm|\ \y V A /l llll A f g 1 VVILLIAIVI F. KRICHBAUM, OF NENVARK. NEW JERSEY.

NEERING COMPANY. A CORPORATION ASSIGNOR TO FOSTER ENGI- OF NEW JER$EY.

PRESSURE-REGULATOR.

941.553. Specification of Letters Patent.

Eatented Nov. 23, 1909. Application filed April 19. 1909. Serial No. 490.764.

upwardly projecting stem l extending through sleeves 27 and ll. and having at its end a screw threaded engagement as Shown with a nut 35.

it indicates a stem depending from the lower side of the valve 16 and working in a recess in a plug it screwed into the under side of the valve easing or body 10. The valve easing or body 10 has an upward ex tension 20, said extension providin an up per large cylinder 21 for a controllin piston 12 on the valve stem 18, and a owe-r reduced or small cylinder :23 in axial alines ment with the upper large portion and adapted. to receive a balancing piston 24, also on the stem is. port, :25 leads from the low-pressure or outlet side 12 of the valve body it) into the said cylinder 21.

in detail construction, the main valve 16 is cupped or recessed to receive a removable disk 26, and the. sleeve 27 on the upper stem 18, has at its lower end a flange 9% adapted to overlap the said removable disk 26 and' hold the same in its position. Said sleeve 27 projects up through the main valve opening avoiding the accumulation of grit or sedi- 1! into the lower reduced or small cylinder meat in the balancing chamber; to thus 50- 2 of t upper portion of the valve casing b d more -f t ti f th or body 10. and is thereat provided with an valve: to secure such a valve which is op- "til s 39 at (ages to To 1'! ir/iom it may concern:

lle it known (ha i. \YiiLiiu I lx'uitiil\t ll. a citizen of tlu l'nited States. residing at Newark. in the county of Essex and a State ol New .I'i'iset. have invented certain which the Followingis a specification.

'l his iuveutiou relates to that cla s ol pressniiregulators designed to receive a ti) lluid under varving initial pressures and deliver it at a reduced hut practically constant pressure;

. More partirularl belongs to that, cla ol pressure regulators wherein the passage of the tluid is controlled lift a valve of eouiparativel v small area operated lrv piston ()t'htlltlPlH'ilLtll ol' conipai'a'livel v great area, the pressure oi the fluid upon the delivery side of the pressure regulator lltlllfl applied 2 0 to the piston or diaphragm to close the main valve.

The objects of the invention are to secure a pressure regulator of simple constrnotion.

and one in which the valve is balanced at a 2-5 point ahove the main valve opening, thus 30 eratod by means o the reduced pressure acting upon a piston actuating the main valve to close, the same against the action of an opposing pressure, such as a spring or weight. and to olitaiii other advantages and I results as niav lie ln'onirht out in the l'ollow- E l i eeivra cup washer Zl-l lilting said c vlinder 21. 'lhe nut 35 on the threaded end ot the valve in description.

llel'erring to the areoiupairving drawings. in which like. numerals of iel'ei'eiiee indicate corresponding parts in each ol' the several lie-ares; Figure l is an end eleuitiou ol' m v 5 improved pressure regulator: Fig. 2 is a section of the same on line i 2 of Fig. l. and l ig'jIl is a similar station of a iuodilied construction for larger sizes.

in said drawings. ltl indicates the valve casingor body of the regulator. and said laid v is provided with an inlet it and an outlet 12. liiterposial between said inlet and outlet is a. partition 13 having a horizontally disposed portion with a valve opeiiing 1 1-, forming at the under side of said partition an annular valve seat. 1 5, atlording eomniuniration lietween the inlet and outlet.

It; indicates the main valve controlling the opening H, and said valve to has an eeive a --up washer 3t) to fit said cylinder. 8b The second or upper sleeve 31 has at its lower end a flange it to rest upon the said cup washer 30, atid at its upper end, within the large cylinder it, said sleeve CH has an enlar "d flange l t ltttssetl at its edges to restem 18. eomliiiies and secures all'said parts together in place on said stem, auilohviouslv this nut has to he screwed on a l'tet: the valve J5 lit and parts carried liy it have lieeu inserted into the valve casing. in doing this the valve is held from helow by a wrench or the like on its squared lower portion l5 and access had to the nut 35 at the top ol' the valve, all the intermediate parts being out of sight. llence. the valve disk 2t; and cup washers 30 and .H lioing compressible, the ends of the sitti'i's 37' and 31 are extended through the eenlers of said parts, as at -16, 47, and '48, to 101') limit compression of them to the proper degree.

sprinp' chamber 36 is secured to the upper end ot the extension 20 of the valve casing, and within said chamber is a helical spring 44 engaging at its lower end the nut 35 secured to the upper end of the valve stem 18. Said spring chamber 36 is provided with interior ribs 38, 38, which extend longitudinally of the same, to receive a slotted spring-adjusting nut 37, and serve to prevent said nut from rotating, while permitting it to slide up and down. The sand spring-adjusting nut 37 is centrally tapped to receive a screw 39, and said screw has a cylindrical portion 40 extending upward throu h a bear ing in the top of'the spring cham er 36,- a flange 41 at the lower end of said cylindrical portion limiting outward movement under the force of the spring 44. The extreme projecting end of the adjusting screw '39 is squared, as at 42, to receive a wrench, and provides a means for regulating the compression of the spring 44. 1,

The spring chamber 36 is provided with a screw threaded vent at 49, and the extreme upper end of said chamber is screw threaded to receive a cap 48, which serves to rotect the adjusting screw 42 and prevent its adjustment bein tampered with. It should be noted that'a l exible diaphragm of ordinary well-known construction would be an equivalent for the controlling piston 22, in the present invention. I .ln operation, the fluid enters the supply end 11 of the pressure regulator, establishing-an equilibrium between the top portion of the valve 16 exposed through the main valve opening 14 and the under surface of the balancing piston in the small-chamber 33. The tluid also passes through said main valveaopening l4,to outlet 12, and at the same time through port 25 to the under side of piston 33 in the large chamber 21 of the valve. When the tluid attains at the outlet end 12 of the pressure regulator a pressure greater than the opposing power of the spring 44, therefore, it forces piston 33 up- .wa. l carrying the main valve 16 toward its seat, and restricting the passage of fluid through the regulator. In other words, any increase in the delivery pressure acts upon the piston 33 and overcomes the power of the spring 44, closing the main valve, while a drop or decrease in delivery pressure acts vice, -versa. A constant. delivery pressure is thus maintained regardless of variation in the initial pressure. 3y adjusting the spring H a delivery pressure of any desired reduction from the initial pressure may be se ured. 'lurniug the ad usting screw-49.

to the right increases, and to the. left decrea es. the delivery pressure.

In l ig. I; l have illustrated a slightly modified construction which is used in the larger sizes of valves, the objectsof such modified construction being to enable the valve casing to be of cast; iron and only the valve'seatand cylinders of that more expensive composition which is necessary for such parts. In said figure, indicate's the valve casing with inlet 51 and outlet 52 separated by a partition 53 in which, is screwed or otherwise removably seated at bushin 54 providing the valve seat 55. The upwar extension 56 of the valve casing receives from its top a liner' 5'? in'which are formed the controlling-piston cylinder-t8 and the balancing-piston cylinder 59. The said liner is shown as supported by a flange 60 at its upper edge entering an annular recess 61' in the valve casing, although obviously other equivalent supporting means might be employed. The valve 62 has a stem depending as at 63 into a socket 64 and also extending upward as at 65 into the cylinders 58 and 59. A valve disk 66 on the valve 62 is held by sleeve 67 whose upper end abuts against an upper sleeve 68 and therewith grips a cup-washer 69 and forms the balancing piston" in the cylinder 59. Above the upper sleeve 68 is a nut 70 adapted to screw onto the valve stem against said .sleeve and therewith grip a cup washer 71 andform the controlling piston in the cylinder 59. "These features are substantially as heretofore described in connection with Figs. 1 and 2. In order to afford communication between the delivery end 52 of the tlov passage and the control-piston cylinder 59, the valve stem is longitudinaltv bored or channeled, as 211172, with lateral branches 73 leading therefrom into the flow passa e beneath the valve 6:2, and other branc cs 74 adapted to register with similar the balancing piston and controlling iston. The operation of the valve is as al described in connection with Figs. 1 and-2.

Having thus described the invention, what I claim is:

passages 75 through the sleeve 68 between ;y

ready 1. In a pressure regulator, the combination'of a valve casing providing a flow passzwe with a valve seat, a balance-piston cylinder above said valve seat and an enlarged chamber above said cylinder, said chamber being in communication with the delivery end of said flow-passage, a recessed valve for said seat having a stem projecting into said cylinder and chamber, avalve disk in said recess, a sleeve having at its lower end a tlange to engage said disk and a projection extending throughthe disk, an upper sleeve having a lower end engaging the upper end of the lower sleeve in the said balance-piston cylinder, a nut adapted to screw onto the stem against said upper sleeve in the said enlarged chamber, a washer held between the adjacent ends'of said sleeves and formin" a piston in the cylinder, 21 member held between said nut and upper sleeve impervi\ ously closing the said chamber and permit ting movement of 1ts said hold ng parts, and means holding said member 1!] normal position.

2. In a pressure regulator, the combination of a valve casing providinga flow passage with a valve seat, a balance-piston cylinder above said valve seat and an enlarged chamber above said cylinder, said chamber being in communication with the delivery end of said flow passage, a valve having a disk for said seat and a stem projecting into said cylinder and chamber, a sleeve on said stem above said disk, an upper sleeve above said lower sleeve, a nut adapted to screw onto the stem against said upper sleeve in the said enlarged chamber, a washer held between the adjacent ends of said sleeves and forming a piston in the balance-piston cylinder, a member held between said nut and upper sleeve impcrviously closing the enlarged chamber and permitting movement of its said holding parts, and means hold.- ing said member in normal position.

3. The combination with a casing providing a flow passage with a valve seat, of a valve having a stem and an annular radial seat around said stern, an annular valve disk in said seat roviding a space between itself and the sai stem, a sleeve on szdd stem extending through said annular disk into engagement with the floor of its said seat and having an annular flange engaging the top of the disk, and means for holding said sleeve in fixed position with respect to said stem.

4. In a pressure regulator, the combination of a valve casing providing a How passage and an upper extension, a liner removably inserted in said upper extension and providing upper and lower cylinders of difterent diameters, a valve for said valve seat having a stem extending from the delivery side of the valve into sald cylinders, a sleeve on thevalve stem having its opposite ends in the said upper and lower cylinders respectively and a lateral aperture intermediate said ends, the said stein having a duct leading from below the valve to said lateral aperture of the sleeve, a nut holding said sleeve on the stem, a member held by said nut on the sleeve forming a piston inthe upper cylinder, and means holding said piston yieldingly in position.

5. In a pressure regulator, the combination with a casing providing a flow passage with a valve seat, a cylinder above said valve seat and an upper chamber, a plug in said casing opposite said valve seat, a valve for said valve seat having a stem extending from the delivery side of the valve into said cylinder and chamber, said stem being adapted below the valve and next said plug to receive turning means, a sleeve on the valve seat above said valve, an upper sleeve having its lower end engaging the upper end of said lower sleeve in the balance-piston chamber, a washer held between the adjacent ends of said sleeves and forming a piston in said cylinder, a nut adapted to screw onto the stem against the upper sleeve, a member held between said nut and upper sleeve imperviously closing the enlarged chamber and permitting movement of its holding parts, and means holding said member in normal. position.

WILLIAM F. KRICHBAUM. In the presence of RUSSELL M. Evnrn'r'r, v FnANcns E. BLODGETT. 

